There's a whole sticky about how to host and post high quality images here...
I would say most forums operate this way. Having a host not just all of the conversations but every single one of the images that people want to upload is a huge ask - just so it's out there.
There are oodles of free image hosting sites. Create an account, and link directly to your image of choice using the image code:
[ img ] paste your link here [ /img ]
removing spaces
|